Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/DtMmdb/dstr/memory_pool.h

@@ -0,0 +1,124 @@
+/*
+ * $XConsortium: memory_pool.h /main/3 1996/06/11 17:17:31 cde-hal $
+ *
+ * Copyright (c) 1993 HAL Computer Systems International, Ltd.
+ * All rights reserved.  Unpublished -- rights reserved under
+ * the Copyright Laws of the United States.  USE OF A COPYRIGHT
+ * NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
+ * OR DISCLOSURE.
+ * 
+ * THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
+ * SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.  USE,
+ * DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
+ * PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
+ * INTERNATIONAL, LTD.
+ * 
+ *                         RESTRICTED RIGHTS LEGEND
+ * Use, duplication, or disclosure by the Government is subject
+ * to the restrictions as set forth in subparagraph (c)(l)(ii)
+ * of the Rights in Technical Data and Computer Software clause
+ * at DFARS 252.227-7013.
+ *
+ *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
+ *                  1315 Dell Avenue
+ *                  Campbell, CA  95008
+ * 
+ */
+
+
+
+#ifndef _memory_pool
+#define _memory_pool 1
+
+#include "utility/funcs.h"
+#include "dstr/dlist_void_ptr_cell.h"
+#include "dstr/dlist.h"
+#include "dstr/void_ptr_array.h"
+
+#define MAX_CHUNK_SZ 128
+
+class chunk_carrier;
+
+class chunk_manage_record_t : public dlist_cell
+{
+
+public:
+   chunk_carrier* chunk_carrier_ptr;
+
+   chunk_manage_record_t( chunk_carrier* chk_carr) :
+      chunk_carrier_ptr(chk_carr) {};
+   virtual ~chunk_manage_record_t() {};
+};
+
+typedef chunk_manage_record_t* chunk_manage_recordPtr;
+
+
+class chunk_carrier
+{
+
+public:
+   chunk_carrier(int chunk_sz, int chunks);
+   virtual ~chunk_carrier();
+
+   dlist* init_ptrs();
+
+protected:
+   int alloc_sz;
+   int chunk_sz;
+   int max_chunks;
+   char* carrier_ptr;
+
+   friend class fix_chunk_pool;
+   friend class memory_pool;
+};
+
+
+class fix_chunk_pool 
+{
+
+public:
+   fix_chunk_pool(int chunk_sz);
+   virtual ~fix_chunk_pool();
+
+// return char*
+   virtual char* alloc();
+
+// free a char*
+   virtual void free(char*); 
+
+protected:
+   int chunk_sz;
+   int chunks;
+   dlist chunk_carrier_list;
+   dlist free_chunk_list;
+
+   void init_one_chunk_carrier();
+};
+
+
+typedef void_ptr_array vm_pool_array_t;
+
+class memory_pool
+{
+
+public:
+   memory_pool(int max_alloc_size = MAX_CHUNK_SZ);
+   virtual ~memory_pool();
+
+// return char*
+   virtual char* alloc(size_t sz); 
+
+// free a char*
+   virtual void free(char*); 
+
+protected:
+   int max_alloc_size_from_pool;
+   vm_pool_array_t vm_pool_vector; 
+};
+
+#ifdef C_API
+#define g_memory_pool (*g_memory_pool_ptr)
+extern memory_pool* g_memory_pool_ptr;
+#endif
+
+#endif